Family in laws or just strangers

I have been engaged since October 2023, and I have not felt welcomed by my fiancé’s family in any way, apart from them participating in traditions where they felt obligated to show up, which they did, but otherwise, they made no effort. My sisters-in-law never asked me to go out with them, and they rarely wrote or contacted me. Throughout 2024, I spoke up every time they excluded me or made me feel unwelcome, and my fiancé always confronted his family, reprimanding his siblings and trying to talk things through with them.

The last conversation was in October, where I spoke face-to-face with one of his sisters, and I thought she finally understood. For two months, she made an effort by sending snaps and texting occasionally. However, in 2025, she has stopped completely. My mother-in-law used to call me often in the beginning, but over time, it became less and less frequent. The last time I called was to wish them a Happy New Year, and since then, I haven’t heard from any of them.

My fiancé has given up on them, as he believes you can’t change people and that it’s ultimately their loss if they don’t want to build a bond with me. My mindset for 2025 is also to let go of them completely. I’ve removed all of his siblings from my social media, and I’ve deleted my in-laws’ numbers. When I see them, I’ll show respect, but I’ll keep my distance.

Still, I feel sad about how things have ended. What would you do if you had to visit your in-laws? How would you behave while still showing respect? What do you think my mindset should be moving forward, both when they are around and behind my back? I’m getting married soon, and I want to handle this situation the best way possible.